Springback Angle and Plastic Elongation Prediction of Thin-Walled Tube Bending by FEM

2012 ◽  
Vol 152-154 ◽  
pp. 456-461 ◽  
Author(s):  
W.J. Dan ◽  
W.G. Zhang
Keyword(s):  
Plastic Deformation ◽  
Finite Element ◽  
Dimensional Accuracy ◽  
Radius Of Curvature ◽  
Tube Bending ◽  
Bending Angle ◽  
Plastic Elongation ◽  
Thin Walled Tube ◽  
Thin Walled ◽  
Springback Angle

Springback is an inevitable phenomenon while the load is released due to the elastic property after tube bending. This leads to an increase in the radius of curvature and elongation by plastic deformation, a reduction in the bending angle of the bent tube, a decrease in dimensional accuracy and fits with others difficulty. By elastic–plastic finite element methods (FEM), a reasonable simulation model for thin-walled tube bending is established to define the relationships between process parameters and springback angle, plastic deformation. With 210 kinds of models, the results show that: 1) Springback angle and plastic elongation of bending tube are related to bending angle, bending die diameter and tube thickness. 2) Controlling functions for plastic elongation and springback angle in bending tube process are given, which is verified by tube bending experiments.

An Approach for Analysis of Bulged Profile and Thickness Distribution of Tube in Free Hydro-Bulging Process

2012 ◽  
Vol 499 ◽  
pp. 127-131
Author(s):  
Xiao Feng Liu ◽  
Lian Fa Yang ◽  
Yu Xian Zhang
Keyword(s):  
Mathematical Model ◽  
Plastic Deformation ◽  
Finite Element ◽  
Wall Thickness ◽  
Deformation Behavior ◽  
Thickness Distribution ◽  
Plastic Deformation Behavior ◽  
Thin Walled Tube ◽  
Thin Walled ◽  
Tubular Components

Tubular components are widely used in the areas of automotive and aerospace industries due to their excellent properties. A mathematical model considering the bulged region as a parabola curve is proposed to examine the plastic deformation behavior of a thin-walled tube during the free hydro-bulged process. The finite element simulations of the free hydro-bulging process are carried out to verify the approach indirectly. The results indicate that the model is accurate and acceptable to figure out the circumferential radius, wall thickness and axial radius of the bulged profile.

The Effects of Additional Two Bendings on Manufacturing Thin-walled Tube made of AZ31 Magnesium Alloy Fabricated by New Compound Extrusion

2021 ◽  
Author(s):  
lin xing Li ◽  
HongJun Hu ◽  
Gang Hu ◽  
Ou Zhang
Keyword(s):  
Plastic Deformation ◽  
Finite Element ◽  
Magnesium Alloy ◽  
Process Parameters ◽  
Fem Simulation ◽  
Process Conditions ◽  
Fem Model ◽  
Fem Method ◽  
Thin Walled Tube ◽  
Thin Walled

Abstract To explore the effects of process parameters on evolution of extrusion forces and temperatures and strains and microstructures for composite extrusion of magnesium alloy tube which includes initial direct extrusion and some steps bending processes subsequently,which is shorten for “TEB” in this paper.The TEB process has been researched by using finite element modeling (FEM) method. The rules of extrusion temperatures and the extrusion forces varying with process parameters have been developed. A TEB process with installed container and die has been constructed to perform tests in order to validate the FEM model with different process conditions. And the microstructures evolution have been researched based on effective strains development. The results showed that refined and uniform microstructures can be achieved by TEB process. The research results showed that the process would produce the serve plastic deformation and improve the recrystallization of the grains.The comparison of FEM simulation and experimental results have been made to obtain the relative important principles of TEB process.

scholarly journals A New Method of Manufacturing Thin-Walled Tube Made of AZ61 Magnesium Alloy Including Direct Extrusion And Corrugated Equal Channel Angular Extrusion

2021 ◽  
Author(s):  
H-J Hu ◽  
Ou Zhang ◽  
Gang Hu ◽  
Hui Zhao ◽  
Zhongwen OU
Keyword(s):  
Plastic Deformation ◽  
Magnesium Alloy ◽  
Large Scale ◽  
Equal Channel Angular Extrusion ◽  
Process Conditions ◽  
Workpiece Material ◽  
Plastic Deformation Behavior ◽  
Angular Extrusion ◽  
Thin Walled Tube ◽  
Thin Walled

Abstract Due to demand of strong toughness of thin walled tube, and good secondary forming properties and high-precision dimension, New plastic forming method should be researched to achieve a complete filling, uniform deformation and microstructure evolution during forming process.To obtain the deformation mechanisms of a new composite extrusion for thin walled tube fabricated by tube corrugated equal channel angular extrusion has been researched which is shorten as “TC-ECAE” in this paper. Finite element DEFORMTM-3D software to investigate the plastic deformation behavior of magnesium billet during TC-ECAE process has been employed. Computed parameters including workpiece material characteristics and process conditions have been taken into consideration. The pridictions of strains distributions and damage distributions and effective stress distributions and flow velocities distributions and microstructures evolutions have been explored. The results proved that the TC-ECAE process is a forming method for magnesium alloy tube which is suitable for large scale industrial application. The TC-ECAE process would cause serve plastic deformation and improve the dynamic recrystallization of magnesium alloy during TC-ECAE process.

The Effect of Anisotropy on Thin-Walled Tube Bending

2011 ◽  
Author(s):  
K. Hasanpour ◽  
B. Amini ◽  
M. Poursina ◽  
M. Barati
Keyword(s):  
Tube Bending ◽  
Thin Walled Tube ◽  
Thin Walled

Study on Factors of Axial Crushing of Thin-Walled High-Strength Steel Sections Used in Passenger Car

2014 ◽  
Vol 989-994 ◽  
pp. 898-902
Author(s):  
Gui Fan Zhao ◽  
Yao Wei Hu ◽  
Xiao Cheng ◽  
Ke Xiao
Keyword(s):  
Finite Element ◽  
High Strength Steel ◽  
Spot Welding ◽  
High Strength ◽  
Element Model ◽  
Welding Seam ◽  
Seam Welding ◽  
Thin Walled Tube ◽  
Steel Sections ◽  
Thin Walled

This paper firstly studied the structure of front longitudinal, then reviewing comprehensive literature draw the similarity of collision of the thin-walled tube and front longitudinal,finally ensure the study of collision of the thin-walled tube. And establishing three kinds of thin-walled welded rectangular beam finite element model of spot welding, seam welding and laser welding, arrive a more superior technology through researching and analyzing the model.

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